80929-58-4

5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid, 3-[(acetyloxy)methyl]-8-oxo-7-[[(4-pyridinylthio)acetyl]amino]-,(2,2-dimethyl-1-oxopropoxy)methyl ester, (6R-trans)-